Home / 28,464.09-39,280.21-15,717.27

Finding the Fourth Proportional to 28,464.09, 39,280.21 and 15,717.27

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Solution

The fourth proportional to 28,464.09, 39,280.21 and 15,717.27 is: 21,689.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,464.09 : 39,280.21 = 15,717.27 : x
  2. Step 2: Convert to fraction form
    28,464.09/39,280.21 = 15,717.27/x
  3. Step 3: Cross multiply
    28,464.09x = 39,280.21 × 15,717.27
  4. Step 4: Simplify right side
    28,464.09x = 617,377,666.23
  5. Step 5: Solve for x
    x = 617,377,666.23/28,464.09
  6. Step 6: Final answer
    x = 21,689.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.